Road plane



IN'VEJV'TOR.'

ATTORNEY July 24, 1923-.

w.' H. JENNINGS ROAD PLANE Filed Dc.

Patented July 24, 1923.

ice. a

WILLIAM E. JENNINGS, OF ST. PAUL, MINNESOTA, ASSIGNOR OF ONE-HALF TO LEOLEVY, OF' ST. PAUL, MINNESOTA.

ROAD PLANE.

Application filed December 12, 1921. Serial No. 521,914.

To all whom t may concern:

Be it known that l. VILLIAM H. JEN- NINGs, citizen of the United States,residing at St. Paul, in the county of Ramsey and State of Minnesota,have invented a new and useful Road Plane, of which the followin@ is aspecification.

My invention relates to road planes or machines for leveling the top ofroads, and the object is to provide an eXtra efficient 1mproved machineof said kind.

In the accompanying drawing:

Fig. 1 is a top view of my improved machine.

Fig. 2 is a side elevation of Fig. 1.

Fig. 3 is a rear end elevation of Fig. 2.

Fig. 4 is a section on line 1- 4L in Fig. 1.

Fig. 5 is a section on line 5-5 in Fig. 1.

Referring to the drawing by reference numerals, the main frame of themachine is a flat skeleton structure made of angle iron and composed ofparallel spaced side bars 6 and cross bars 7. The side bars have each anupward flange 6a upon the outer edge, and

.the cross bars have each a downward flange 7 at the forward edge.Secured to each of the flanges 7a by bolts S is a steel blade 9 which ina full sized machine inclines with its lower edge about half an inchforward of the upper edge so as to better engage the ground and alsoretain a sharper front edge than if the blade stood in verticalposition..

The right hand end of each blade 9 is curved forward as at 10 so as toprevent escape to that side of dirt heaped up in front of each blade.

The front end of the frame is provided with a chain 11 or other suitablemeans for hitching thereto either draft animals or a tractor, and uponthe frame is mounted 'a seat 12, while the rear end of the frame isrovided with a diagonally arranged end board 13 lined with sheet metal14: at the front side. Said board is pivoted at 15 to swing up and downwith its rearmost end; the latter end is pivoted at 16 to the rear armof a hand lever 17, which is fulcrumed at 18 and carries a nger lever 19operating a dog 2O engaging a toothed sector 21.

To enable the machine to be held above the ground during transportationit is provided with two transverse angle bars 22, each of which has itsends trunnioned at 23 and has a pair of casters 24 swiveling at 25, orif so desired the rear ones may not swivel but be secured by rivets 26.

Each bar 22 is provided with a hand lever 27 and near it is pivoted at28 to the main frame a dog 29 having a notch 30 adapted to engagealternately either one of the two flanges of bar 22 so as to hold thecasters either clear above the ground, as shown in full lines, ordownward as shown in dotted lines when the machine is drawn idle.

In the operation of the machine thelevers 27 are used for turning the`bars 22 with the casters to the desired position. When startingoperation on a road the machine is lowered with the blades 9 down to thelowest position and the vcasters locked by the dogs 29. The machine,which for ordinary requirement may be about six to seven feet wide andabout sixteen feet long, is then drawn forward with the guards 10 nearone edge of the road. rIhe blades 9 will now scrape the dirt from thehigher into the lower parts of the ground and whatever surplus of dirtwill not sink into cavities in the ground is engaged by the board 18-14:

4which finishes the surface of the road by spreading as much as possibleof said surplus dirt into cavities not already filled, and if there is aremainder of surplus dirt the same is forced out through the clearance31 in Fig. 1 and left along the middle of the road where it'may beworked down or removed in the next drive of the machine in the oppositedirection upon the other half of the road. If the road is a wide onethemachine may be hauled back and forth several times until the road isfully smoothed and may be further treated by a roller. One of the mainfeatures of my machine is that it is long enough to never tilt or tipinto the cavities it is to fill in planing the road.

What I claim is: y

A road planer comprising an elongated skeleton frame adapted to be drawnendwise,

a series of transverse scraper blades fixed to the under side of the:traine and a diagonally arranged, vertically disposed scraper bladehingedly attached to one of the rear corners of the frame, and meanscarried by the other rear corner of the frame and 0peratvely attached t0the adjacent end of the diagonal board for raising and holding it raisedto various positions, said frame llaving` transverse angle bars andbolts passed 10 through said angle bars and the scraper blades to makethe blades detachable for grinding or repariing.

In testimony whereof I afx my signature.

WILLAM H. JENNINGS.

